Disk brake



FIG. 1 is a front, bottom perspective view of a disk brake showing the new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a front perspective view thereof;

FIG. 4 is a right side perspective view thereof;

FIG. 5 is a left side perspective view thereof;

FIG. 6 is a rear perspective view thereof;

FIG. 7 is a bottom perspective view thereof; and,

FIG. 8 is a rear, top, right side perspective view thereof. 

The ornamental design for a disk brake, as shown and described. 